OSB has a rough, unfinished side and a smooth side with a thin, moisture-resistant finish. When installing on a roof or subfloor, the rough side should be facing up to provide traction for walking.

However, insulated subfloor paneling, consisting of OSB sheathing backed by foam insulation, is available — for a price. Particleboard is not used as frequently as the previous two options.

However, insulated subfloor paneling, consisting of OSB sheathing backed by foam insulation, is available — for a price. Particleboard is not used as frequently as the previous two options.

However, insulated subfloor paneling, consisting of OSB sheathing backed by foam insulation, is available — for a price. Particleboard is not used as frequently as the previous two options.

However, insulated subfloor paneling, consisting of OSB sheathing backed by foam insulation, is available — for a price. Particleboard is not used as frequently as the previous two options.

However, insulated subfloor paneling, consisting of OSB sheathing backed by foam insulation, is available — for a price. Particleboard is not used as frequently as the previous two options.

Every person I talked to about your project said the moisture content of the flooring was far and away a bigger concern than the OSB subfloor.

Both subfloor treatments provide an airtight, insulating vapor barrier system that prevents moisture problems in summer and winter, Reichel said.